Stealthman,
Have you considered adding a 4" stabilizer to your selection? The reason I ask is because a lot of people are starting to realize the benefits of adding stabilizers to back of their risers and a 4" seems to be a pretty popular size. I noticed on your web site that 6" is your smallest size. What do you think?

Also, if you custom made a 4" size or any size for that matter, would the performance be proportionally the same as your other standard sizes? I just want to make sure that performance is not lost when ordering a size other than your standard offerings. Sometimes depending on the technology inside, certain sizes seem to work better than others on various stabilizers. Thanks.