by dscscotty » Thu Jul 17, 2014 7:51 am
300 is plenty big enough, I would as knowledge and Toddy suggested be looking at fuel flow via tap, is fuel pipe snagging or kinking somewhere or fuel tank vacumimg as a result of no breather, you may also want to check there are no puctures to floats and that the float height is set.
Good luck and dont you just love em?