1975 300 backshift

[kube1]

Hi
I have what I hope is an easily answered question. I have a 1975 300 that I have just put back on the snow. I've cleaned and replaced the entire fuel system including the carburetor and fuel lines. New crank seals and fan belt on the engine. As well as set the timing. The machine starts beautifully and purrs nicely at idle. In fact it runs great. Having not run one of these before, it sounds like it is really revving out before shifting on the secondary. There is no tach so I cannot give specific rpm. Just wondering if this sounds right? The secondary was cleaned and serviced. And it slides nicely.

Thank you

[kube1]

Primary rollers were siezed. Shifts very nicely now. Thank you