Zama, Walbro Carb issues/rebuild

[Aled Hughes]

Recently I've encountered many zama and Walbro carbing issues on saw rebuilds. Sometimes it's purely a case of a new kit and its sorted but when that doesn't work is where i come up against a brick wall. Could it be a welch plug issue or the check valve below the brass piece? What i'd like to know is is there someone or a company that will refurbish these carbs so they're good to go and as good as new again as they tend to be from older or saws that have been laying around for a while that i completely rebuild thanks