Sounds like he is close in size to mine then. So if you have had him for at least 6 months and he's been on pinkys, I'd definitely be giving him the larger prey, if he ate the fuzzy and you don't have problems, I would say keep on them for a while and then increase as needed. I'm thinking he will be healthier with the correct size of mice, b/c the bigger the mouse, the more nutrients, calcium, etc.
I can try and see if I can get a pic of my snake tomorrow compared to something, I'll see what I come up with to take a comparison shot. She is easier to handle b/c she's bigger so I shouldn't have trouble with a pic.
I think to put pics here you have to upload them to photobucket or something like it and then copy the web address to here. Photobucket gives you an option to copy the URL or IMG and you just copy/paste and it's here.
Here is a feeding chart that some people use, some don't. I like it b/c I am new to corns and it gives me something to go by. But as said above they can eat anything 1 to 1-1/2 inches as big around as the snake is. I thought the adult looked quite large for my girl but she did ok with it and has eaten another one since. The breeder told me she was ready for adults, switching over from weanlings. The plan below is called the Munson plan. Just another reference for me at least. My adult is 180-200 gms. So this chart matches exactly what my particular snake can eat. Yours might be smaller since he hasn't been eating as much.
When they're on single pinks (2-3g), I feed every 4-5 days. (Snake = 4-15g)
-Double pinks (3g x 2) every 4-5 days. (Snake = 16-23g)
-Small fuzzies (5-7g) every 5-6 days. (Snake = 24-30g)
-Regular fuzzies (7-9g) every 5-6 days (Snake = 30-50g)
-Hoppers (9-12g) every 5-6 days (Snake = 51-90g)
-Weaned (14-20g) every 7 days (Snake = 91-170g)
-Adult (24-30g) every 7-x days (Snake = 170+)
-Jumbo Adults (40-50g) every 7-x days (Snake = 400g+)