Indivision AGA MK2 issues

[giZmo350]

Hi there sturulez!

I really doubt there's any fault with the scandoubler. Color distortion is a classic symptom of an ill fit. You really have to MASH on them to get a good fit. However, I would back up a step. Get some hi quality fast evaporating, non-filming tech spray and clean the socket and the Lisa pins before installation. I also recommend a real good visual and even possibly burnishing the socket pins and Lisa pins with an eraser that resembles a pencil (after you sharpen it to a fine tip). Then, like I mentioned, mash right down on the scandoubler (to the point that it feels like you might actually break something but not quit). This might take 3 or 4 tries till you get the colors to display correctly. And, believe it or not, the longer the scandoubler has been attached to the Lisa chip the more stable it gets. Good Luck! 

[giZmo350]

Glad you got it mashed down!   
Did you get the software with it? If not, here's Jens' Wiki page for the product software and the manual.

http://wiki.icomp.de/wiki/Indivision_AGA_MK2

There are literally hundreds of posts over the years on configuring the AGA MK2.
Especially using the Config Tool!
Here's a Google link on the subject.....   the results are staggering! 

https://www.google.com/search?client=firefox-b-1-d&q=indivision+aga+mk2+config+tool&sa=X&ved=2ahUKEwiWg_iQ9r7qAhUVbs0KHWgWBmgQ1QIoAHoECAsQAQ

A bit of Googling will net answers for probably every question you have. 

The Wiki page should get you started though....   

As far as all the different HW configs I can't really speak to that as I have only ever used mine with a DVI to VGA adapter.
And as far as the config tool goes, I finally got so tired of messing with it I deleted the software and just run it with the Super Plus driver. However if I change resolutions, it will no longer auto scale so I just leave it at 800x600 and software now just fits in the screen mode fine. This is not recommended though! 

[giZmo350]

I have been playing with this config tool all evening and I can't get my head around it.

HAHAHAHAHA! Told Ya!

I was messing around installing retrofans config and now now I can't get the resoultion I want. I've got a massive border around the display and a small work bench screen in the middle of my monitor

You are seriously on your own.....      Unless we have an Indi AGA MK2 expert lurking here!