Low Gain on Spark amp models.

[FenderBender]

Hello. I've been enjoying the Positive Grid Amp as a practice and livingroom amp for a few weeks now.
I very much like the app etc and the amount of amp models. But i am missing some gain in most of the cleaner models.
E.g. if i crank my real tweed princeton it will distort quite heavily. Anywhere past half way on volume and it breaks up.
I can't seem to get anywhere near this with the tweed models on the Spark. Cranked to the max on volume and gain, output set pretty low, and still very clean. A real cranked tweed amp is MEAN. I cant seem to get near 'layla' or the 'Neil Young Cranked Tweed' sound.

I am also missing the sound of a cranked silverface/blackface. And the Dumble OVERDRIVE
Special model stays clean to the max. When pushed with the built-in boost pedal it starts breaking up only slightly. I know the ODS aint a growling monster, but it can get quite hairy from what I've heard on recordings.

So, anyone else experiencing this?
I would very much like to have more realistic volume/gain-pot response.

[alphasportstv]

Mine gets very dirty with the Dumble, vol and gain are quite high (8.5?)