We have an oldie VW LT35 and have been quite impressed with it. It might be worth doing what we did and buying one that DID need work. But pay the appropriate amount for it. That way, you get the work done to your spec and you know it's done right, it means we know we have all the metalwork ok...
I think you have done quite a bit of investigation, the horse is well fed and your set up doesn't allow you to make major changes.
Given the horses lameness and behavioural issues I think it would be equally right either to continue and persist in trying to resolve it or equally right to call...
Really recommend forageplus hoof balancer, there's a winter and summer one and they are esp good for the things that hooves need to get concavity - has worked a treat for my 'she's just got flat soles that's the way it is' mare. One key thing is that the forage plus ones have very little iron...
I would check with vet. It could be something very minor but it could just be be heart related, and it's very easy to check that out at the vets, if it was then don't panic as there are v good drugs (my Dobies been on them 2+ years so far)
I would be going back to them. They may say the guarantee is only 6 months but that is irrelevant to their legal obligations to make sure it is free of defects and will last for a reasonable period of time. Which sounds like neither in this case. Trading standards might be another optionl since...
Also look at Strutt and Parker (select Banchory office as the identifier for the search) and also the local agric auction mart sell properties (not just at auction) ANM mart
http://www.anmgroup.co.uk/estates/property-index.php
If the issue has been recorded and reported to the council before and not dealt with then they are normally liable for damages resulting directly from the fault. Not saying you want to go that route but hinting at it and that you are aware this is the case might get it sorted out jolly...
Re the midges, choose a property on a hill and without water courses or boggy areas, and although you will get more wind, you won't get bothered by the midges. We don't have much bother with them at all. But friends a couple of miles away down in the woody bits by streams get them terribly.
I think OP is right to be dissatisfied with the facilities but since the resolution (extensive work on the manège or fields on drainage) will cost more £££ than she or the other liveries are ever going to bring in then it is not something the YO is likely to have he power to change. Which means...
I completely agree. They did our mini barn and double field shelter and they are brilliant. They are straight with you about the actual spec you need for your conditions (90mph and lots of snow here means wind slats in the shelter back wall and upgraded framing and lining boards throughout)...