Spits & Hurri's to 25,000 + feet in RL?

[Catseye]

I want to thank everyone that has replied with this great information.

I am totally amazed sometimes when the right guys respond to a statement of frustration with clarity and logic.

Thanks for listening and for the info - I'm going to take further time and try the different settings provided including bases where distance will permit steady climb to operational height in an unchallenged manner.

Cheers.