For some reason Incline is really hard for me too do. I can Benchpress and decline bench 133lbs(45platex2) 10 times with no problem. But incline I do 93lbs(25platex2) and I struggle doing 6 reps. Also I feel alot of strain on my shoulder area. Could this be because of the degree of incline or something? Is it normal for incline to be much more difficult?