Glue for hatch handle

[WillN2Sail]

More up to date sources say the glue for the Lewmar handles is Plexus MA310. I'm looking for people who've either used it, epoxy or something else and it's stayed on for at least a few years. The Plexus is made for these plastics, epoxy is usually good, if you have a lot of tooth, (rough up the surfaces.)
My boat is 22 years old and one just popped off the other day. I've got at least a dozen of these glue points, latches, hinges, and the horizontal ports with the three catches, all glued on. The Plexus MA310 comes in those double syringe containers that mix. I want to also find out if anyone has used this glue, sealed up the syringes and was able to use it again and again. Thanks

 

[thinwater]

Plexus MA 300 (Devcon packages it as "Plastic Welder") should be available in small tubes. A methylmethacrilate, it is better than epoxy for most plastics, including acrylic. Nicely thickened and as fast as 5-minute epoxy, but without the lower strength of 5-minute epoxies. One of the most common adhesives in the boat and plastic bonding industry.

Obviously, very, very similar to MA 310. The difference is the cure time. MA300 is too fast for large assemblies. Another advantage of MA300 (Plastic Welder) is that it is easy to buy small amounts.

(from ITW)

 

[WillN2Sail]

Thank you Thinwater. Reading between the lines, I'm guessing there's no less expensive option with the same properties. But is there? (I know I can do a lot more with epoxy if the surfaces are deeply scored for tooth.)
Plexus MA310 seems to only be sold in 50 mL Cartridges for $35. Short shelf life after opening. I was hoping for smaller quantities, less expensive. I guess I should start with MA310.