In certain embodiments, the upper housing member has an outer diameter which is generally equal to or slightly larger than the second diameter of {TAIL ~ the second recess} so as to create a frictional fit between the intermediate housing member and {HEAD ~ the upper housing member} 
In certain embodiments , the upper housing member has an outer diameter which is generally equal to or slightly larger than the second diameter of { TAIL ~ the second recess } so as to create a frictional fit between the intermediate housing member and { HEAD ~ the upper housing member }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD