First want to say Hi. Great info on this forum from you guys.

I put a shift kit and all new seals in my 1969 TH350.
I removed the small seal at the shift linkage shaft (flush to the housing boss) easily and there seems to be another one in there approx. 3/16" below housing boss.
Is there supposed to be a second one? How do I get it out? A buddy suggested drilling, putting a screw in and pulling out but I'm afraid of seal wall damage.
Can't find any exploded view that shows these seals.
Please help if you've got experience....