Can't remove no name single lever shower handle - no set screw

[TomSlyck]

Hello,

The shower is leaking from the handle and there's no set screw keeping the handle in. The lever adjusts the temperature and turns the shower on and off. There is a cap over a hole, but there's no screw in there. I've tried pulling but I'm fairly sure if I keep pulling I'll break the whole thing. We just moved in about a year ago, and I'm not sure when this was installed but it looks older.

Any thoughts on removing the handle? I see there's two screws on that big piece of metal that looks like a serving platter, but I haven't dug into that yet. See images below...

 

[GReynolds929]

Looks like Moen which means there is definitely a set screw in there. It's farther in than you think. IIRC it's a 7/32 Allen key.

 

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[Breplum]

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