The standard rubbers are pretty good. The reason we have so much trouble with them is that the after market springs don’t have the thin pigtail at the top and bottom of the spring, the bar diameter of all aftermarket springs ( except the VW lowering kit made by Eibach ) is constant and doesn’t fit well in the mounts , 3 years ago I commissioned powerflex to make an up rated bush and offered to pay the development costs to make it to my design , Powerflex in their infinite wisdom. Shot off and made it completely different ( they paid the development cost) , my initial order of 250 parts. Was returned for credit as the bush is near enough useless as it was and didn’t work properly .
We have now commissioned a large car parts developer in Telford to make these parts for us. All our kits will be supplied with these in the future and hopefully another little transporter gremlin will be resolved .
Made in England proudly. Ha ha.