At last guiding works as intended and without changing the settings wildly or going against PHD2 recommendations.
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From the last time out I have tightened the screws on my guidescope which caused it to shift slightly, so the main scope is pointing to the lower right corner of the guidescope fov, which is not much of a compromise since i just have to pick the closest guidestar in that corner instead of the center.
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In ServoCAT Sky? i have set backlash comp to 0 on alt and az, lowered the guidespeed in ServoCAT Sky and the Meade Generic driver to 6 arc seconds per second (0.40 x Sidereal).
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I also created a new profile in PHD2 where it detected the 0.40 x Sidereal guidespeed from the Meade driver.
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It was windy outside, the type of wind that makes me very skeptical to even give imaging a try but i gave it a shot anyway!
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PHD2 calibration was completed without any warnings, and after running the guide assistant it recommended min mo of 0.12 in RA/AZ and 0.19 in DEC/ALT. So i followed that.
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I tried guiding first to the north at 38 degrees altitude, then to the east at 50 degrees altitude, in both cases, despite the windy conditions i got 1.0-1.3 RMS guiding in arc seconds. Similar error in both axis and round stars in the test exposures.
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The guiding graph looked similar to my 200PDS on the Sky-Watcher EQ mount without any large deflections apart from a windgust here and there,?
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Then the clouds rolled in! Can't wait for the next clear night hopefully without any wind!
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Moral of the story: Read the PHD2 documentation:
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From the trouble shooting document:
"YouTube videos, unless done by someone close to the PHD2 project, have wildly variable quality, often reflecting misunderstandings and sometimes producing a witches' brew of good and bad advice - so be careful what you watch.? One of the most common mistakes is to wildly change the PHD2 guiding parameters in a futile attempt to correct for mechanical problems that exist in your setup. ?This only makes things worse. The default guiding parameters calculated by PHD2 reflect the parameters you entered in the new-profile-wizard, so they are already adjusted for your setup. You should be able to get reasonable results out-of-the-box if the equipment behaves and if you don't, you are probably dealing with operational mistakes or mechanical problems"
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Edit: I did however follow the below alt/az PHD2 guide (unchecked multi-star guiding and changed the ALT/DEC guiding algorithm to Hysteresis etc)
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Gabriel Wiklund