Trans Go TF-2

I just recieved my TF-2 kit in the mail and have a few questions about it.
I previously had a TF-SC kit in my 904 and it called for drilling out the 1-2 shift apply in the seperator plate to .096. Of course the new kit says not to drill it and remove the checkball instead. Whats the fix for that?

Also the old kit called for a hole thru one of the partitions and the new one says to plug it. With what? Would epoxy hold up and not come loose?

I was also wondering if there is a washer of some kind that goes between
the bottom half and the pushrod in the kickdown servo. I've seen some exploded drawings of it and there is something that looks like a washer. Mine has none. Thanks for any help you can give me.