Problem greasing Toro C3000 zero turn

The Toro C3000 is about 2 years old and has just reached the 100 hour mark.
There are 2 places where I cannot get any grease into the zerks. The idler arm assembly and the pulley towards the rear, close to the engine. I have replaced both zerks and both had grease in the ends of them when I took them out. I have never been able to get any grease in there and am now starting to worry. I have one of those pistol grip grease guns that works just fine on the other grease fittings so I don't think its a grease gun problem.

Any ideas on what is going on and how I can fix it? I was thinking that maybe if I can't get any grease in there that maybe its just full.

Also, one more question about greasing. When I grease the 3 blade spindles, the salesman told me I should see grease coming out under the deck. I jacked that thing up and greased the heck out of it and have never seen any grease come out the other end. Is this normal?

Thanks,

Zeek