The system is designed for 32mm frame-less cabinets. I'm interested in the system but I build primarily face frame cabinets. So, how useful is the system for face frames? Does it take away from the system if your cabinets are not based on multiples of 32mm? And lastly, if you're using the 1400 rail on cases taller than 1400 do you need the longer rail or can you use the both the top and bottom of the case to reference the holes? Thanks.