I hate them twist locks gotau
Early in the game i bought bits and pieces to fix ours up hopefully,i ended up finding a supplier overseas but i had to buy in bulk,im a prospector,i didn't want to be selling products in this game,buying in bulk i had no choice though,i'll post a link below,it's a good setup,there on ebay or available through Finders Keepers in Kalgoorlie WA.
If you can source clamps and suitable yokes it's easy done,carbon tube is readily available anywhere online,the cam lock clamps are the tough ones to find,if you look at my ebay listing you can get the jist of how to go about it.
Im not here to sell,it's ended up this way by default really,quite a few in oz have swapped them over,big improvement,cutting the old ferrule off is the biggest hurdle...
Yes o rings might help,give it a go.
https://www.ebay.com.au/itm/175362680247?mkcid=16&mkevt=1&mkrid=705-154756-20017-0&ssspo=TZ_np61lTXu&sssrc=2051273&ssuid=TZ_np61lTXu&var=&widget_ver=artemis&media=COPY