After buyin a cheap used ferris and replacing some things, I realized a real thin 1 1/2- 2 inch in length crack just below the engine balancer part on the engine block( I originally thought that part just needed to be tightened or a seal replaced). It does seep oil. Now, do I look to some expert welders($) (it's aluminum and all) or can jb weld do the job for a while? Proper application? Any little advice apreciated. I also have a line on a good cheap used simalar kawi,so a temp fix might be ok.