P90TXR just replaced the head and rebuilt lower unit. I put the flush hose on it and it is spewing a steady stream of water out the mating surface between the block and new head. After closer inspection you can see a small gap on the block where it looks like someone sanded out a small area. Gap is noticeably larger than the rest of the gasket mating surface. My question is…can I take the power head short block to a welder and fill the surface and get it machined or do I buy a new short block?