Greetings,   I would like to replace the Dometic Frig in my 2016 13' Scamp.  The things I do not like about it:  no freezer and no temp control.  I purchased an AC small frig which I plan on it running off a solar setup / 100 amp/hr lithium battery.  AC frig uses only 5 amp vs. 11 amps with the Dometic.  I started to remove the Dometic but I have a question on what secures it in the back of frig.  Are there screws holding it?  I noticed there are 2 rivets below the pull out drawer above the frig.  Any help appreciated.