I have a gsr swapped in an ef and just swapped in a new tranny into in. i got the tranny in and had to put the distributor back on but it was hard to put back in, but i finally got it in. Now i am geting code 4 (crank angle sensor) and code 8 (tdc sensor). The codes didn't come up right away it was about a half an hour before they did. what could be the problem. the msd distributor worked perfect before i took it out.