Hello--I had a new A/C compressor and dryer: and a conversion to the RU 234 system done last year in my 89 Range Rover Classic. My A/C works fine, but it needs a re-charge now. I purchased one of those over the counter freon charge cannisters, but was distressed to find that the nozzle on the cannister does not fit the re-charging nipple on my A/C system. I presume that it may need some type of adaptor to fit. Does anyone have any thoughts on this? Thanks in advance.