I was doing a service on my 6100e and everything seemed good till I was screwing the transmission fill cap back in and right at the end it just twisted off with almost minimal effort. The problem was what was already in the threads was frozen and would not come out and I had to chisel it out. My worry is a good bit of that material fell down into the brand new hydraulic oil I put in the transmission. Does this mean that I'm draining that and putting new stuff when I get my new cap in or is there a chance it would be fine with that plastic material just getting chewed up in there.