hey i just checked out the page for the concept 1 and it says this: 13.8mm gobo with 12.5mm image area. that is actually pretty small. you might want to check out internetapollo.com they sell gobos in just about any size. once your there click on products linkand select stell or what ever type you are intrested in. but you might have to e-mail somebody there from support to get prices. also i will send you a private message. i hope you read it and respond! how many concept 1's do you have? jingles
p.s. you might be able to get some gobo's through adj. im not sure though.