In the past few weeks my bench press has been going down. I could not figure out the cause of this as my squat, DL, and most other exercises were progressing normally. However, today I went to my local gym with my friends and noticed my lifts all shot up. Now, after thinking about it I attribute this discrepancy to the fact that the bar I use at home is very badly bent. I've been looking for information on why this might be (despite my common sense telling me I am correct) but I cannot find any information on this. I was however, going to buy a new weight set (or 2) anyway so this problem should be fixed. In the mean time should I not lift with the weights I have at home?