Combining my Mortys

The first time that I tried to combine any Mortys - I failed
After a couple attempts, I have successfully combined -2- Jerry Mortys to create a Beth Morty, and today I combined -2- Fork Mortys and created a Spork Morty.

I cannot combine my -2- Sunday Best Mortys, and I cannot combine -2- Soldado Loco Mortys - I get a message saying that 'these two Mortys cannot be combined'.

Is there an information page that I have not found, (I truthfully have not looked too hard - sorry. I HATE going to any P.M. sites other than this one - I get an 'atta boy' for that, right? lol). The two Soldado Loco Mortys & the two Sunday Best Mortys are different levels, so right now I am trying to even them up
- (it sounds good in theory! >.< )

If there is not a specific page, or guide somewhere - any thoughts/ideas will be greatly appreciated!

Thanx EV1
xxoo ~sg

pocketmortys.net/guides/morty-combinations

I don't see why you're having trouble with the Soldado Loco Mortys, but Sunday Best Morty is an Exotic Morty, meaning it can't be combined, however Soldado Loco Morty can, turning into Enforcer Loco Morty when combined.