I would like to replace the current corregated hose on my Hollis HD100 with the exhaust dump valve style (slight pull the hose vents air out of the bc). I had this on my prior BC (Sherwood Avid) and prefer it. The HD100 hose uses an elbow out of the bag. Can this be easily replaced with the exhaust dump style? If so, can anyone suggest where I can buy one?