One possibility is our program Propain Friends, where you can meet with Propain riders in your area personally.
Here you can find our Propain Friends: https://www.propain-bikes.com/en/Friends
Another possibility is our manufacturers area in the IBC forum. Many experiences have already been published here and questions have been asked. You can also formulate your questions there and get an independent answer to them. Propain’s own support also helps with questions about Propain. Here you can find the forum: http://www.mtb-news.de/forum/f/propain-bicycles.249