i do a push/pull/squat 5x5 3 day split. recently i gained a better understanding of what i need to be doing on a 5x5 routine and have a question. using squats as an example, i get to my 5th set and either can not make a final rep at all or w/o losing form. should i be starting my 1st set at a lower weight, or just add lesser weight to the final set? to me, the answer would be to add lesser weight to the final and this is what i want to do but my gym lacks 2.5lb plates and am using your guys's input to decide whether to go get my own. thanks if you can help.