fitted a john guest tap to my facelift pole hose , fitted at top by brush , now i tryed to fit it on difrent brush which has yellow 5 inch hose but it wont quite fit in , ive warmed it up with hot water but to no avail , i have only seen a 8 inch tap to but on line , my tap now says 5 and a half on it what ever that means .. hope this makes sence