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Hey Guys, Beginning this year I noticed something was a little bit off with my 98 two stroke yamaha TLRW130. The main thing is that I seem to have lost about 3-4mph off of the top end at WOT. The motor had also seemed to maybe lost a bit of pep that I was used to. I wasnt sure if I was just getting fatter and weighing the boat down with quarantine weight. But lately ive been working out and eating right and am back in shape so its not that anymore 😆 Anyways, immediately when dealing with carbureted two strokes I think, compression, air and fuel delivery. In order of price and worrisomeness, I figured there was a chance that I was losing compression and this was causing my motor to not deliver as much power as I was accustomed to. So yesterday I took it upon myself to do a proper compression test (warmed up the motor, removed the plugs and turned the motor over on each cylinder) and thank the lord, my compression was about as close to 130psi as a person with a 22 year old motor could hope to be. Needless to say the headgasket and rings are in good shape. So now after discussing with a few friends who are a bit more mechanically inclined I talked about what things I should consider to try and get the motor back up to speed. First obvious choice is the plugs, but I change those every year so the current set literally only has about 20 hours at most on them. One friend mentioned the gapping, but the plugs Im running are the plugs for my outboard. I dont see how they should need re-gapping? (feel free to tell me why im wrong here, im oblivious) Second, is bad/weird gas...I only run premium ethanol free fuel in the boat and regularly run seafoam through. No different gas has changed anything. One friend mentioned to check the reed valves for wear and seal. A good idea IMO, i may even upgrade these to a performance set manufactured by the top yamaha outboard performance shop in the United States. Doesnt seem like a difficult job to do once the carburetor is off. Another suggestion is to swap the fuel filter and inspect the fuel line/replace them. (I think I am going to do this immediately, especially the fuel filter) Finally, to simply clean and redo the gaskets on the carburetor with new gaskets using a carburetor repair kit and clean all of the jets and ports out. Ive done this on a small 15hp suzuki, with the right amount of time Im sure I could do it on the bigger yamaha. The one thing Id be scared of is simply adjusting the air and fuel spring screws once clean. Im not certain how the pros adjust these considering some are basically inaccessible while installed on the outboard. One thought is to simply count the rotations of the screws to "snug" from their current position and then try to repeat that backwards when re-installing. Perhaps they need adjustment though? Is there a bible on how to do this? Another idea I had just from experience with my old car was a potential vaccum leak? Im not sure if thats possible on this type of motor, but is there somewhere that can be considered a "trouble spot" for vaccum leaks on these types of motors? my experience is specifically with your standard DOHC 4 stroke car. My old mazda leaked like a seive lol. Does my train of thought seem logical? Is there anything else that you recommend that I check. At this point Im basically willing to do anything knowing that I was prepared to have the top end rebuilt, knowing that its in great shape leaves me with an almost wide open budget to tinker. Im all ears to those that surely know far more than I do! Shoot me your suggestions!