I just ref Kurfys own site, its, easier.
Actaully it was a nice discussion (without Spits) until Kurfy appeared spreading his BS again.
Spit 14 only came into it because of his inaccurate comparisons of Dec 1944/Jan 1945 Spit 14 operational only strengths vs 150 April 45 combined op and non operational K4 strengths.
Its an easy logical conclusion -
a) Mar 20th 1945 - Ordered that the remaining 3 K-4 units and 1 G10 unit are boosted to 1.98ata (note ordered, not already boosted).
b) Conversion to 1.98ata was slow (off Kurfys site again)
c) April 9th (20 days later) - 79 operational K4's left.
d) May 1945 - End of war
So what is more reasonable? Given a country that was around 10 weeks from surrendering from the Mar 20 order, and was getting attacked 24 hrs a day.
1) There were K-4 1.98ata birds, but very very few in numbers must have been a lot less than 79
or
2) everyone of the remaining 79 K-4's had been converted.
or
3) I need a drink (double preferably

).