Gelcoat Repair - Need Advice

[NeedOne]

Hey Fellas, wanted to see if you could provide some pointers on Gelcoat repair work.

Using Evercoat Neutral Gel Paste, trying to repair white areas. pics attached of prepped repair areas

1st problem - I will smear out pre-catylist color swatches on a test area until color is 'right'
estimated 3-5% white pigment + 0.1% yellow pigment
When MEK is mixed in, the color seems to change and bias to slightly more yellowish, ruining color match

2nd - It is finishing semi-transparent..
When hardened you can see the dark colored filler/ fiberglass gradient behind it. looks terrible.
The gel paste states no more than 5% pigment

3rd - Finish - I was expecting to lay the gel in a spot, flatten out with acetate film and get a flat almost perfect repair.
Instead it is yielding a 1 - 2mm raised smudge around the repair with pin hole bubbles, smeared gelcoat around from it smashing out of the film..just not a good result

I'd appreciate any advice ..thanks