OBJ, Thanks for the post. I to use to have no trouble patching tubes but now I have no confidence. For me I patch exactly following the directions. Maybe right away or several days later, I install the tube and begin to fill with air. At about 60 psi or so, the patch will let go. I mean it's as if the tube streches but the patch don't. I have not tried Rema or Park Tool but will try both and both glued and glueless. The only patch kits sold here are Slime which is what I use. I also use quality Bontragger (sp) tubes from lbs.