I am replacing the frozen PTO clutch cable on a 3320, and am wondering if anyone can give me some advice on keeping this from happening again. I had not used the pto in well over a year, and I know you should work them once in a while whether using the pto or not. No excuse, I know better. I had always used WD-40 on them every once in a while, but was wondering if graphite would be a better choice before putting in the new one. Any suggestions would be appreciated. Thanks.