Still learning about my 1970 Series II and what may or may not have been dismantled in the engine system over the years. Noticed last week that the hose from the diaphragm on the distributor was missing but also noticed how well the engine starts and idles. From what I have read this hose runs from the distributor diaphragm to the front carburetor and initiates dropping the timing from 10 degrees BTDC to zero degrees at idle. Any damage running the engine without this part of the vacuum set up? I believe it is more of a anti pollution system.