Hello Deejay
Thanks for your prompt reply. Yes for my 14" 45. I am guessing the master link spring clip is old and worn. Hence why it comes off. All sprockets and tensions are spot on. Thanks for posting the link. I am going to grab a 10ft roll of 415H and new master links this week so hopefully that will solve me problems. Have 2 14" a 17" And a 20" so will eventually get around to changing all over to the H chain.
Cheers
Steve