Have a problem with head & shaft glue on set with heads coming of shafts.
Less then a year old use about 6 times.Cannot find the Manufactors Address or email to decuss this problem with them.

Common thread here on GM.
General rule is that manufacturers will not deal with you - they will tell you that your guarantee has to be honoured via the shop/individual that you purchased the item from.
If you purchased them via ebay or can't get back in touch with the seller, then obviously your only hope is to try and get in touch with Dunlop.
As a last resort, getting them fixed isn't hard. It is quick and cheap to get the shafts epoxied in properly.

As Andrew says an often discussed problem

I recently reshafted a Donnay wedge (probably same manufacurer) and noticed just how little glue was in the head as I barely had to put the heat gun on the head before it loosened.

I just use ordinary Araldite to glue/ reglue shafts back in. All you have to watch is that you keep the grips in proper alignment.

dont use a second more heat either as the shafts are made up of more epoxy thean carbon lol