The phrase "above board" is an idiomatic expression that means to be honest, transparent, and ethical in one's dealings, especially in business or financial matters.
It implies that all actions and decisions are open and fair, with no hidden agendas or secrets.
The idiom "put a spoke in my wheel" means to hinder or obstruct someone's progress or plans.
It is a metaphorical expression that comes from the idea of putting a spoke in a wheel, which would prevent it from turning and make it difficult to move forward.