Replacing the shift tower seals on my 04 tj with an nv3550. Removed the 4 bolts to take the tower off the top of the transmission. The shift lever where the two M6 bolts would go are completely shot. I am unable to thread a fastener to compress the spring. I do have a separate transmission that uses the torx bit however the threads inside that seem to be slightly damaged (looks to be the first 1/4 of the fastener is cracking off). How would you go about taking the shift lever off my current tower? If it is not possible without damaging the tower in some way, I can try using the other tower. I have not yet as I need a bolt to go into it... Any ideas?