Questions regarding the upgrade Omega to LPG

Hello, I’m new here. I’ve been browsing a lot but a few questions are still open. I would like to address those who have also converted an Omega with XEV2.0 to Autagas. I myself have been in a BRC system for 2 days. Now to my questions? 1. Since I have learned that the engine from Englang has no hardened valve seats, Flashlub was recommended and installed. 2. I was recommended to switch to petrol at speeds of more than 4000. How are your experiences. 3. With d he delivery was no manual available, does anyone have any idea where to download it quickly? 4. On the round BRC control panel all four LEDs flash after refueling, this indicates a problem from the tanker. 5. How reliable are these displays. If anyone has any experience, please report. I am grateful for any hint. Thank you in advance Ulrich