Weatherby SA-08 help

[Mgderf]

I need a heavy gas piston for a Weatherby SA-08.
I have the one for light loads, but for the life of me, I can't find one for heavy loads.
Can anyone here help?

PLEASE?

Also, will I damage the gun if I fire heavy loads with a light load gas piston installed?

 

[dave29]

It should have came with both pistons. I'd call Weatherby and get one?

 

[Mgderf]

I'm sure it did, but I did not get it.
The shotgun was new, but I didn't buy it.

Also, Weatherby is "currently closed" due to the Covid-19 virus outbreak

My biggest concern is damaging the shotgun if I run heavy loads through the light load piston.