Protruding non-drive side bottom bracket cup

so i seem to have a similar issue

just installed a brand new veloce bb in a surly pacer. drive side goes in really easy but the non drive side cup is a bit tougher. screws in until there's a bout 1-2mm left between bb shell and the cup and then there's no way i can scew it in more, don't want to give it more welly and risk stripping the threads. I'd say i've applied plenty enough force.

anyhow, is it ok to ride with a bb where the non drive side cup isn't flush with the frame? Should i take the frame to my LBS to get the bb threads cleaned up?

that should be fine. you probably got to the end of the thread inside the shell. now its in, just carry on with the build. my non drive side never went flush to the shell. never been a problem