Useless Class A doghouse cup holders

[Cherguin]

Has anyone found a good solution for the shallow and useless cup holders built into the dog house of the2018  Coachman Mirada 35KB? It has the hard molded doghouse with two cup holders that won’t even hold a can of coke let alone a Yeti cup

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[opnspaces]

Two possible solutions if the reducer above doesn't work.

This one is universal from Amazon but since it has an expanding base it might work.
link 

And this one was designed for the Miranda but it is probably only Miranda specific

Link 

[Cherguin]

I tried a 4x 3” reducer and a 4x 1-1/2  reducer and neither would fit the bottom of the existing cup holder.  Lowe’s didn’t have a 4x1-1/2” reduced coupling but I’ll try that next.   I’m really surprised someone hasn’t come up with a replacement that will just drop into the existing holders.  They aren’t removable or I would make something to fit in the hole in the doghouse. 

[craig7h]

I have found that a pvc increaser fitting, 3" to 4" works great. You should be able to pick up at any of the big box stores. Measure your holders size first however.