I can understand the protective nature many of the members have for Robert's Wind Restrictors. We know of his work, his attention to detail and his health issues.
Some newer members coming here don't have that relationship yet.
To the newer members I'd like to say:
Welcome to owning a new bred of car and with that ownership, entry into the great unknown. This includes aftermarket items. Many of these companies are SKY-centric so they have a very small market to sell to. Additionally they are often cottage industries and have limited if any additional employees. You are taking a chance in helping an entrepreneur get started.
To the businesses I say - when you have difficulties or are caught in a bind (whether it be business, financial or health) you should make sure that the customers "caught" in the cycle are kept abreast. Certainly health emergencies and other sudden calamities can screw this all up. Everyone need to be aware these are not multi-million dollar establishments in most cases.
In the mean time everyone needs to be understanding, and that also means if a customer wants to get their money back, they certainly have every right to ask for it and use what means are available to recover the money.
All in all treat everyone exactly how you wish to be treated.