That ring sealer is known as "snake oil" here in The States.
Sounds to me like at the very least you need to spring for a head gasket. Don't know what color your smoke is but it could be possible some is caused by coolant. That sure wouldn't be good for cylinder walls and rings.
Here is what I have Winston. Hopefully you can see it. Bucket attachment requires a pin at bottom and a hook type deal at top. Everything I've looked for online seems to be a bust beyond hiring a fabricator to make me some forks.View attachment 498694
In the picture below, it's the lever just in front of the brake pedals. Perhaps it's because the previous owner placed a different seat much higher and further back that makes the lever difficult to access. In any situation, it's now changed and easy to reach.You talking about the parking brake type feature? You lean down and engage it and then disengage it?? Not hard at all.