For some time now been having weird shifting issues on my car. Under load, especially at WOT, it doesn't want to shift from one gear to the next without really forcing it and sometimes it won't go in at all. To provide some background on the car, it has a TKO 600 with about 30,000 miles on it now and a RAM HDX clutch with about 5,000 miles on it. I also have an adjustable Steeda clutch cable with a firewall adjuster as well. The tightness of the cable seems about where it should be, but I have had a couple cables stretch out on me requiring replacement already. Due to the strength of the TKO and relatively low miles, I doubt it is an internal transmission issue so I'm thinking pressure plate maybe? Any help or suggestions would be appreciated, thanks.