FX-1 fx-1 tuning

i recently put a sj pump and a coffman wetpipe and the installation papers with the pipe say to set 2.3 needle and seat 142.5 main,14lbs pop off presure 3\4-1 1\4 high screw and 1\2-3\4 low so where i need my help is the ski runs decent when its cold but after a 5-10 min ride it boggs out big time top and bottom. i give it full throtle and the ski dosnt even move anyone have any suggestions
 
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