Complex sentence: The Vibratosax represents another attempt to produce a low cost saxophone made of plastic, however, it remains to be seen whether that venture has solved the mechanical and durability issues that plagued the Grafton.
Split into simpler sentences: The Vibratosax represents another attempt to produce a low cost saxophone made of plastic. However, it remains to be seen whether that venture has solved the mechanical and durability issues that plagued the Grafton.