I'm in the middle of my T18 swap in my CJ7 and I just cleaned off my T5 bellhousing that I drilled and tapped, and I noticed one or two cracks in the bellhousing. I can see the crack on the inside and outside of the bellhousing. It is not spread open or anything, but more like a hairline fracture. Is is nothing to worry about or is it repairable or should I get a new bellhousing?