Hey guys. Just wondering about a few different things involving weighlifting and I figured someone on here could steer me in the right direction. I've been trying to get back into shape and part of my plan has included lifting weights again. There are a couple of problems that I have encountered though. I am a classic ectomorph- 6"6" 225lbs, long limbed for sure. While my calf strength is fine, I have let my quads and hamstrings get really weak. I have been doing squats with really light weights to try to build up my overall leg strength and I am getting really bad cramps in my hamstrings while lifting. I know that I am stretching enough- for at least 15 minutes prior to lifting. Is there anything that I can do to limit these cramps in my hamstrings? Should I not go past parallel? I don't have access to any leg machines, so free weights it has to be. I have dislocated my left patella severely before and I have had acl/mcl reconstruction on my right knee so I am definetely concerned about injury. Also, what have you guys found to be the best bicep exercises? It seems as though they tire really quickly but I still get a really good pump. Are these just normal hurdles that I have to overcome or could I be doing something different/better? Thanks in advance.