i got my clarke tank for x-mas (and seat), so i now have yzf capacity tank. one question. how do i use the petcock so that i don't run out of fuel (or seem like it) while in the middle of a race or sumthin???? should i just automatically run it on the stock wr reserve setting, or what? or should i remove the petcock fromt eh tank and trim off the stock hoses going up into the tank?? i noticed the stock wr "on" hose goes about 1/2 way up into the tank, and the reserve hose only goes about an inch or so into it. thanks.