i tore my foreman down, 411 miles on the ticker already. so i got it down to the motor to adjust the valves. well i get the piston to TDC (take a straw and set it in the plug hole til it comes all the way up) and i try to adjust them but i they seem to closed? can that be possible ? they rattle a bit though? what am i doing wrong? i think i am gonna try to move the piston to where i can get the feelers in it? please help aaron