Carburetor clogging

The carburetor in model motor often causes fuel piping circuitry clogging if it isn't used as long as half a year interval.
At the time when I brought PILOT Ace B with OS 32 FX motor burdened 3H carburetor, such kind of problem was found.
The phenomena is like that, main needle response is dull, the rotation at hi-speed needed to make the mixture rich required much loosing turns. In order to obtain some necessary RPM keeping richer condition the needle position was changed into more opened angular position compared with the usual angle. Also, fuel squeezing at lowest speed was changed into more opened position.
This kind of unusually unstable fuel control is caused by the clogging error in the carburetor or fuel piping circuitry, according to my long experience can I conclude like this.
The competition meeting at Toyooka would be held at the end of this week that is the last meeting to be held there, no more meeting at Toyooka in future for the convenience of the Government Office.
The maintenance work for the carburetor would be performed today and the result would be tested tomorrow keeping the best condition.
The broken micro servo for rudder control is replaced into a more stout mini servo, E-Max 9258, driven at 4.8 V with metal gear hi-speed.
Because I didn't have a adequate servo at that time, chose I a tiny micro servo while fearing with the reason of operating torque, a weak case construction came into breakage, the load at rudder control in addition to the nose gear connection was too heavy and too destructive for a smallest micro servo. Too much burdening on the weak mechanical construction led to some fundamental decay as a matter of fact.
Remembering my past bitter experience, a poor and weak flying tail construction on the horizontal stabilizer in YSHIOKA Pegasus Acro led to breakage at that portion and it was lost completely with missing.
Anyway, too weak construction led to an accident wherever it might be.