How much space is required between the back of sleeper and headache rack?

614857

{"text":"I tried googling this but can’t find an answer. How many inches is required between the back of the sleeper and the headache rack?  ","videos":"[]","pics":"[]","canComment":true}

289718

{"replyTo":"","text":"dump all the air out well at least til your bunk comes down and rests on the frame or the bump stops then give it another 2 inches or so. that's how I do mine","replyToPid":0}