Qsys

Without knowing the issue it'll be hard for others to give advice on workarounds.

For tutorials do you mean how to integrate a system that uses MM or something specific to designing Avalon-MM masters and slaves? If it's the latter I would start with becoming familar with the Avalon-MM specification (make sure you read version 2.0 if you use Qsys). You might find the easiest way to learn the implementation is to look at some 'clean' HDL. If you look at the memory tester blocks in the Qsys tutorial that might give you some ideas on how to structure your logic.