I know this has been discussed in another thread but... Does the engine speed on your Trabant "ramp up"? Like the engine get's wound up and it takes awhile for the idle speed to drop? What I mean is if you rev the engine up or come to a stop light does the engine take several seconds (like seven or more seconds) before the idle speed falls and stabilizes? I don't know if that makes any sense. And an inconsistent idle speed. Is this a characteristic of the Trabant 2 stroke engine or is something else going on? It may just be that the engine is just loaded up with fuel and is just taking a while to "burn off" but I wonder if it's related to the ignition timing. Reason I ask is I wonder if the centrifugal advance on mine is sticking or delaying. Like the springs are worn or the mechanism needs lubricating or something. I converted mine to electronic ignition but still has the advance mechanism. Some electronic ignitions systems do away with this advance mechanism and use a pipe or something in it's place. I think Andrew in New Zealand electronic kit uses this. Up to around 1000 rpms, the timing is at TDC. The advance mechanism starts to engage around 1000 rpms and is fully engaged around 1400 rpms. Based on my observations using a timing light and my tune up tachometer. After I got my Trabant I had an issue where the idle circuit must have been clogged and in order to get the engine to idle, I had to raise the engine speed to over 1000 rpms so it would idle. This caused a really inconsistent idle speed because of the advance mechanism engaging and some stalling at red lights. After I gave the carburetor a good cleaning it idled much better and stopped stalling. I going to test a theory I have. The EBZA system uses a fixed timing. So does the EBZA system idle any better than the system using the points? The idea is to lock the advance weights in place and set the static timing to 4 BTDC. EBZA is suppose to be 3 BTDC. I don't know why the difference but 1 degree shouldn't matter. Especially since the fuel we have today is much better than what was sold in the DDR back in those days. If pre-ignition/pinking is of any concern. The reason for this is whenever you advance the static timing, the engine speed increases with it. So if the timing tends to wander, it's going to mess with the idle speed. I found on Fiat engines, which calls for a static timing of 10 BTDC, the engine idles much smoother at 17 BTDC. Before 1979 when the EPA mandated electronic ignition on all cars sold in the United States (American cars were already using electronic ignition as far back as 1973) the EPA called for the static timing on Fiats to be set at TDC. The result was the engines idled rough, bucked under acceleration and lacked power, etc. The "fix" was to advance the timing to 10 BTDC. So I'm thinking advancing the static timing on my Trabant would idle better as well. From my understanding the reason for TDC at idle with point systems (on Trabants) was to make the engines start easier.