Thanks for the feedback.
I'm sorry, I've failed to be entirely clear. My two workout partners are a couple of friends of mine. One of them is short, and had teeny, tiny, short little arms. So we put the pins down for him (we all bench one after the other). I'm thinking that I should just start adjusting our rotation so that I'm doing another lift while he's benching, then change the pins around when it's my turn.
JamFly: I don't know about shoulder problems. I've tried the shoulder mobility tests I've seen in a couple of articles here, and it seems to be fine. I'm not in love with bench press to the extent that I neglect other exercises to balance it out. I'm deadlifting every other workout along with the bench. I sure hope it's not shoulder problems already, but I suppose you're right. If it persists, I'll have to see a doctor (it hurts me just to type that).
I was just curious to see if anyone else had had a similar problem.
BTW, shorty is close to getting kicked out of palindrome's junkyard gym. He's flaky and has only shown up once in the past couple of weeks, so , friend or no, your words may have been prophetic, Cormac. Not only are the pins way down because of him, but we're always having to take tons of weight off when he benches because he's fallen so far behind. I guess I'm a shallow friend.