Just rebuilt my 04 f7 efi 250 miles ago and now it burned down both pistons. Had oil to the oil pump but didn't bleed the pump. I was adding oil, so it was using oil and was also premixing. Wondering if it could be a bad fuel pump or if anyone would know what it could be? Sled would also sometimes dog out at 7000 rpms, so I am assuming that is a power valve issue or if the two could be related.