[Elecraft] I AM LOOKING FOR OWNER MODS

[WA2JJH at aol.com]

i  have heard there are many mods and add in circuits designed by K2  owners.
  I recently purchased a used K2. I am very happy with it.
I miss two features that were on my TS-850. twin slope PBT and manual  notch.
 
  I did notice the BFO adjustment. If one had accurate, repeatable,  and real 
time adjustment, could one not get a passband tuning or IF shift  effect?
 
   I like all the empty space inside to add ones own creations. I  am looking 
forward to what some have come up with.
 
  I have a serial number 03100+. I see K2 are up to 04700+, any great  
difference?
I guess it is most prudent to get the PC interface. That is the way one  
upgrades the K2, correct?
 
TNX MIKE WA2JJH