Thanks for the suggestion but the LHBS isn't exactly local. OTOH, I've decided to do a 2 step starter so that should help.
Do yourself a favor and get more yeast. A 2L starter of 6+ month old yeast is a pitifully low cell count for a lager (< 20% of the optimal pitch rate for a standard 1.048 beer).
Why take the time to create a recipe, buy the ingredients, brew the beer, clean everything up, then cross your fingers and hope for the best when you are clearly dangerously low on yeast? Doesn't make any sense.
I just brewed a bock this past Monday with 2206. Pitched at 48F and had very active fermentation within 24 hours. OG was 1076 and I pitched a 2 gallon starter. Hope that helps.
2 gallon starter...what was your batch size?