Really glad to find this thread!
I recently found an HMM with the same cabinet and was concerned it had been hacked.

I'd still prefer the production artwork but nice to know it's probably factory.

I won't know more until next week, but now I know what to look for.

I wonder if there are examples out there with working drop targets at the ramp entrance? And what code they're running?

Well, a friend picked up the proto/test HMM for me today. It's still a 6hr drive away so hopefully I can grab it soon.
Here are some pics of the different cab and, what looks like, a drop target that's been covered up.

If anyone know anything about the target I'd love to hear more.

Thanks

HMM_right_(resized).jpg

HMM_drop_target_(resized).jpg

I've had a few of these 6803 Bally pins (Special Force, Black Belt, Motordome, Strange Science and now HMM). They all seem prone to crazy airballs and funny ball movement. They are not what I would consider "smooth" machines, but what they lack in refinement they make up for in pure cheesy fun. The soundtrack alone on Black Belt or the bad 80's syth and crickets on Special Force always put a smile on my face.

The best thing to do is make sure your targets are not facing up and have new foam backers.

As for the drop. I have a couple of spare drop target mechs pulled from a buddy's extra Special Force playfield. They should be a perfect match. One is smart and one is standard. I would love to retrofit this in if it would work. I wonder who would be able to answer this?

So, if anyone was ever wondering what a factory HMM drop target looks like, here ya go!

20160315_235200_(resized).jpg

I finally got my proto/test machine home and, to my surprise, found an fully intact drop target mech and wiring. The only issue is that the coil wire was intentionally clipped and there's no code to support it any longer.

Looks like I'll have to hunt down some proto code... if it exists.

Here's my thread if you want to read more: https://pinside.com/pinball/forum/topic/my-proto-heavy-metal-meltdown-adventure