i am running the smaller prop, the trophy plus only comes in one size im told and thats why i added the exhaust spacer ring to the prop, its glued to the front to take up the gap. i was told the original trophy props came in two sizes thats why im confused on the peformance, it should work but its not. i have done evrthing the mercury guy told me to but still no dice. guess i can try the 2 dooler deal and swap out that last plug, but like you said and so has everyone else probably wont make that big a diffrence.
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