That makes sense. The only thing is, it wasn't going too badly when he was there, but once he'd gone home and I'd moved onto the next field (to the right, the other side of the hedge in the the video) where there was more trash, the trouble really started.I'm no expert but perhaps get your mate to drive at your normal speed and you walk or run beside plough to see where the surface trash is coming from.
Like this:So start with basics
Rear tyres exactly same pressure
get all the adjustments freed up and working when u get a chanceThanks for that @moldengineer - that's really helpful.
@Roy Stokes - I think you may be right. I was having a fiddle with it yesterday but didn't get much joy from trying to move it over, something has seized somewhere.
The tractor's flat tyre turned out just to be from dirt being stuck in the valve - annoying but much easier to fix than getting the tyre off to mend a puncture. I've been over the plough and adjusted all but one of the skimmers as per what has been suggested by @DrWazzock - the one left is seized as one of the bolts is missing its head. I may end up cutting that one off if I can find a suitable second hand one to replace it.
Thank you everyone. I have one small field left to plough this season, I'm waiting for it to dry out so I can spread some compost on it prior to ploughing. Once that's done I will report back on how the plough goes.