Ecat, Im very proud to have another HO Man on this board. If your bored 1 day get me the Model and serial # please, a couple of the 225HOs left Sturtevant,WI with the 1.86:1 gear case, others had the 1.71:1 Gear Ratio, you may know what you have, does it Rip you into the seat at Launch, or is it a Lil slow out of the hole with Blazing Mid range and Top end? What prop came with it? You can call Me Day or Night at 920-295-2069 I have some “Inside engineers” and Top Secret Racers at Team H.O. so if you ever have questions or concerns let me know…..BrannonYour Signature …