T-19's are famous for the TOB drying up on the tranny input shaft sleeve, and for the clutch fork wearing in such a way that it pushes the bearing crooked. This causes the TOB to gall (scrap away) at the input shaft resulting in high pedal effort and a ruined input shaft sleeve. You need to replace the Fork, the pivot ball, and inspect the sleeve for wear and replace if necessary. Best thing is once you get it all squared away, you need to lube your input sleeve on a maintanance schedule. I'd say every 10K. This can be done easily by yanking the fork and ball, and sticking your hand in there with a rag to remove all the old grease and slather on some new.