700r4 with allen screws holding front seal in.........

I have a 84 chevy with a 83 700r4 transmission and after (a quick freshing up).......

I found that my front pump housing had been modifed at some point.

There are 2 allen head screws (with thread) holding my front seal in place.

Has anybody ever heard of this?

Has anybody ever seen this?

Was this done in a recall? Is this normal?

http://www.youtube.com/watch?v=7XC4tc0w2zU

Early 700's had a problem with the convertor seal blowing out of the pump. The first fix was to install the seal with red Loctite, then General than came out with a steel clip that retains the seal (still used to this day). Later pumps had a larger/re-engineered fluid drainback hole that mostly eliminated the problem.

thanks:

I posted a video of what the allen screws look like.

I can't figure out how they got there