Hard going in and out of reverse

I'm having trouble with my 833 in my '68 Barracuda. I had the trans gone thru by a local tranny shop and when I got it back you could barely get it in and out of reverse with channel locks. I took it back and he said the cover was interfering. I thought it was still hard to move after getting it back but my friend told me that they all shift hard into reverse. After installing everything, I can barely get into or out of reverse. I'm using an Inland shifter and the forward gears shift smoothly. I got my friend to try and shift it last night so he would know what I was talking about. Now he says the tranny has to come out (again). I've read about tapping the side cover up a bit but my friend never heard of that and says all my fluid will leak out and yada yada...Does the tranny need to come out? About to lose my mind hear...Thanks.