thanks for the replies guys, its been a bit of a nightmare... I managed to get it to a watch shop straight after posting on here and spent over an hour there untill he closed. the watch is back together now with the use of a bezel press but in the process the bezel click spring disappeared and theres a temporary one in there out of another watch but its got a lot of play in it and the bezel slightly rocks up and down as tho its loose, which makes me think about what 'ssteel' said about possibly kinking or bending the bezel assembly ... feel like i shouldn't have bothered trying to change the insert in the 1st place as now the watch is worse off.
thanks