35+21 Pipe/Manifold Combi
Hi,
Recently purchased and run-in a 35+21 (steel bearings).
Currently matching it with nova 2015 + 6-fin manifold.
Power is decent at best, but run time is approximately only 4 minutes.
Does anyone have any recommendation for pipe/manifold combination for a large track that offers decent run time (say approximately 4:45?)
Thank you in advance.
Sam