240 DL sedan 1989 B230F 244K kilometers automatic

Just completed the tailshaft bushing and seal replacement. Job went well. MTC kit from groton, cheap and fit like a glove.
Took the opportunity to put in a new tranny mount too since it was original and looked somewhat sagged... cheap$ scan tech I think (groton).

A few concerns:

1.. The car has a more noticable "grungy" exhaust sound, coming from the front half somewhere... No obvious leak really or anything bad at all, just a deep tone. I am assuming that when I dropped the tranny a bit it "forced" the piping or a gasket somewhere. Any thoughts? Could it also be the new tranny mount positioning the tranny higher and requiring some sort of exhaust re-alignement? (the complete exhaust was replace two years ago, incl. downpie and cat, was quiet as a whistle).

2.. The new tranny mount has considerable less rubber than the original. I am assuming the quality is really not comparible, but put it in anyway. Any issues with these replacements?

3.. I used the tranny pan bolt (plug) to drain out the old fluid. It came off nicely, went on tight but I suspect a 'slight' stripping of thread when I tightened it (doh). I backed off very quickly. By no means is it loose now, it should hold and bond itself for life. Any experiences here? Any fixes?

Thanks!

Greg Mustang
greg_mustang@hotmail.com
Montreal - Ottawa
Canada