Thanks in advance for any advice. I have recently rebuilt an ~84 Bianchi (Japanese) and replaced the bottom bracket with a square tapered cartridge. My issue is the driver side has come loose a couple of times with minimal mileage (around 10). The socket has no visible deformity but I don't have a tool to measure or Mic the inside. The cranks are the original Sugino and I am wondering if they need to be torqued to a minimum ftlb or if I need to replace the cranks.