I am making a Cab Suv.
I only had it in the primary for about 2-2.5 weeks at most (though I did have it sit next to the heat register to make sure it doesn't stall)
When I checked it, it was 0.993, so I transfered it to a secondary.
I tasted it and it didn't really taste bad or anything, but was wondering if it could get screwed up by leaving it too long in the primary