* Delete 2 Part 3040 Blue Slope 45 2 x 1
* Add 2 Part 3040a Blue Slope 45 2 x 1 - without Bottom Tube
I recently bought a used copy of this set. The part are like new. It seems the
set was only built once. The sticker sheet is new/unused!
I contacted the seller who told me in return that she sells the collection of
her step-father who passed recently and that he built his sets only once and
kept the built set inside the box.
I also contacted a polish collector who also bought this set used but knows that
it was only built once and kept that way.
Moreover, as far as I know, the slopes 3040 were not released in 1980 but after.
(most likely in 1982, otherwise 1981). I have checked many used copies of 7730
and 7740 and could find out this timeline by checking the production date of
motor.