I am fairly new to Steve carts. I build a tree farm with it with success. I had two problems yesterday: first a question: It seems, that the wood cutter needs diamonds to get rapaired, Yesterday the cutter was at rougly 68% so i decided to try a repair, inserted diamand into the apropriate slot but nothing happens . There is a message instead, that the machine is quit good and i should remove the diamands. Can one repair the wood cutter only when it is broken completely?
Then the main problem. I had a problem mounting the Upgrade: Cart modifier to the Assember. From time to time it will not mount, instead it apears on a side of a ghost block right in front of the assember, but not on the appropriat side of that block (it fits in a 90% angle to the block, like a fence for example). If you have managed to mount it the right way after a few tries, the cart inserted in the upgrade is not shown in the assembler at all. After a few tries the upgrade eats the cart, i had somehow managed to put it in the wrong inventory right below the slot it should be in, after dismounting the upgrade the cart was gone. The Upgrade: cart modifier seems to be broken

it seems to be a known issue: TechReborn/StevesCarts#61
that means: try not to modify a cart if you dont want to loose it and perhaps a reapair is not possible (?)