Unlucky K8

I think this is the first pattern I've knitted up from MagKnits and I'm a little disappointed. Firstly it is a little unclear to read. Secondly I think there's a mistake in the pattern. Take a look at the following shots and I'll explain.
On the diagram that came with the pattern the thumb section is shown as growing in a wedge-shape equally on both sides. Looking at the actual mitten in front you can see its works as an uneven wedge. Also the stitch count is out in connection with this - the blue stitch-marker shows where the thumb section should actually finish rather than the white marker next to it. Based on my calculations and what I've already knitted up I think the pattern should be as follows:

Inc 1 at beg of next 4 rows only, working thumb increase below AT THE SAME TIME:
K to marker, pass marker, YO, k to 2nd marker, YO, pass marker, k to end of row.
Purl.

and not:

Inc 1 at beg of next 4 rows only, working thumb increase below AT THE SAME TIME:
K to marker, YO, pass marker, k to 2nd marker, YO, pass marker, k to end of row.
Purl.

as appears on MagKnits.

Otherwise everything was great with it - the colour is fantastic, the pattern was working out OK and I wasn't a million miles away from finishing the first mitten which made it all very frustrating. Just look at it -


And now it's practically back to square one again. Well at least I'm back to the end of the ribbing, again! But this time round I actually fancy trying a different lace panel to what is on the original pattern so we'll just have to see how it works!