yeah i have heard that and can see it happening. mine came with 4 holes not sure y , but maybe newer design. I got the shifter in the box with the car so it was free! Not a big loss! I didnt put the springs in , am i able to do that with out pulling that damn white boot?the springs are pretty much a must. the silicone is a good idea but it may leak. because they only use two holes on the shifter it can flex under some conditions and still leak. even people i know that use and like it eventually get some leaking. it wasn't a good design
good luck with that Hurst. there have been quite a few incidences of the shifter going completely limp due to a part wearing. it has a worse reputation i think than the B&MFYI. Changet out my GMM for a Hurst. Need to go to the dealer and get the transmission Glue/Sealent that they recomend. Silicone RTV has a reaction with ATF and will break down. It is going to leak. sorry for the bad news but It happend to me and I should have known this from school. There is a ATF safe RTV sealant but I have had good luck with the GM stuff. Apply a small bead and let it sit for 15 min the apply the plate. Works mint!!!