Griffin Radiator leaking

[Mikej]

Anyone had this problem?  I had noticed alittle steam last spring but ran all summer without any problem. Noticed some water on the fender in October. I use a radiator tester on it Friday. Pumped it up to 30 psi and no laek. Cap was bad so I replaced it and went for a ride. Still leaking. Crack must open up when hot. Looks like where the epoxy and the tank meet. I was wondering about their warranty and dealing with them.
 The wife and I got it out today. We will have to get another griffin or someone elses. Going to put in a HP water pump in also while its apart. Debating whether or not to pull the heads and port and polish. I need to lower the compression to get rid of light load pinging.