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