e50 just eating shit

robert /
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i've been messing with this damn thing for days. i'm really stumped. here's the set up

mostly stock 2hp maxi e50

14mm bing

tecno bullet pipe

hi comp head

so here's the problem; extreme bogging and loss of power. as in, can't make it up the driveway loss of power. it was O K before i put the hi comp head on (still couldn't make it up hills tho). i've tried every jet from 54-76 and none of them help much. it's give or take but they all bog and i'm currently jetted at 64 which according to friends and the spreadsheet is right, so that has me thinking it's something else. i've checked for air leaks and i'm good. set the timing too.

any ideas?

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