Consider using
Knape & Vogt 8400series RV Stay-Close full extension drawer slides (100 lb rating). You have to give them a tug to release and then they self close/lock when pushed back in. I installed a bunch of them in a previous TT and they work great. Am about to install some in our TT for some drawers I'm building. They are available from lots of vendors. I'm considering replacing all the existing OEM drawer slides with these. I don't like the cheapy commonplace cabinet door roller catches they all seem to use with roller bearing slides.