I asked the same question the other day and got mocked by a bunch of snide jerks on the boards. I sent mine off for RSD - it was picked up on Friday afternoon at like 5 pm and I am typing on my repaired and operational (seemingly) MacBook right now, and it's Tuesday night. It actually got here today about lunchtime. They replaced my heatsync, cover, and an assortment of other components, so fixing a gap should be pretty quick I would think.
I wouldn't worry. as i've just found out...they can be very fast.