Corbin seat lock problem

I am beginning to see a problem with my Corbin Gunfighter seat that a riding friend has had quite severely for some time.
I feel sure that others here will have this problem and, hopefully, a solution.

The problem is that the plastic seat shell weakens then breaks around the seat lock.
In my friend's case the only thing holding the lock in place is the vinyl seat covering.
Mine is not quite that bad, but the lock is quite wobbly. It appears the shell is quite thin in that critical area !
Trying to remove the nut (21mm?) that holds the lock body in place appears to be likely to only worsen the damage, so I stopped after removing only the cylinder.

I have a suggested solution to put up for comment:

I would remove the lock barrel/cylinder leaving only the hollow lock body in situ.
Next, clean the threaded exterior of the body and the plastic all round the seat "hollow" where the inner lock is located.
Finally, with the seat on its side so the lock part is at the bottom, and pour epoxy resin so that it fills to nearly the rim of the lock body.

When it sets the resin should provide the extra support the body needs (...and is currently lacking)
The only downside of this that I can see is the lock body is now permanently attached to the seat shell. It isn't a wearling part anyway.

Maybe someone has a better solution?
Cheers

Can the seat base be plastic welded, ground flat and drilled?

Fast Eddie said:

Can the seat base be plastic welded, ground flat and drilled?

Click to expand...

I suppose so, but you'd have to remove the cover (which is riveted on) to do so.
I'm trying to get away with not having to do that.
Have you seen my nice blue-and-white apron?

Is the seat shell plastic or fiberglass? The seat shell or pans on my VFR and NT650 are fiberglass. Not sure what the Corbin on my Commando is made of.

Stephen Hill said:

Is the seat shell plastic or fiberglass? The seat shell or pans on my VFR and NT650 are fiberglass. Not sure what the Corbin on my Commando is made of.

Click to expand...

TBH I'm not really sure. It looks like plastic but may be some kind of polymer sprayed onto a fibreglass base.

Having had two Corbin seats the base material is different from one to the other. The earlier seat base was a smooth finish and much nicer than the latter. The newer seat base material is coarse and looks to be of some sort of recycled material. This is the newer one ..

There is a downturn in quality from Corbin in my opinion. The earlier seat had suede on the nose where it contacts the tank . The newer seat has bare pop rivets which can be unkind to paintwork . The earlier seat had various inspection stickers indicating quality control- nothing on the newer one.
The seat also had a dent in the upholstered hump . If I hadn’t planned on making a hard cowl for the hump I would have returned it . If you know the age of your seat Corbin should be able to tell you what the base material is.