your elevation will also have a negative effect on your cranking pressure.... I usually have my carb about 4 jets leaner then stock at 6000 ft DA...and that was on gasoline..
Our DA was around 87-8800 foot yesterday.
I don't know what jetting these 750 dp come with stock, but it seem just about right for up here. Base circle has all but a full turn of color on it now.
It time for a compression check on it just to have a base line on it.
And guess on what it will be? All plugs out, throttle wide open, and cranking until the needle quits bouncing.........................