Hi Papingo,
I have fewer ones than Ivan, but they´re there and there are always some surprises I don´t even know about until they happen!
Some get interrupted by others, and the planning is really non-existent - terrible, and disorganized, but at least something happens. If it´s one of my FS98 models perfecting for CFS1, it doesn´t usually take as long as a new scratch-build, unless it doesn´t work and has to be stopped... One never knows until it happens!
Cheers
Aleatorylamp