+1 This might be your best option as they offer a variety of knots and handles which are excellent. You could also contact Rudy Vey as he can easily source you the Shavemac knots and turn you a handle of your choice.Shavemac has a configurator to order a custom brush within their offererings....which are pretty broad.
If you are UK based then I can recommend Mervyn Cadman who can make brushes to order. You can even arrange a visit to his workshop to see the process in action. A Google search will find him.Anyone know any quality artisan brush makers, that offer custom knots and the whole package. I don't like glue bumps..
Seems like most only offer humongous knots - I am not a fan if a lather hog. Any suggestions?