Modified 25-pounder guns

[Tony Smith]

Yes, I do and Yes , there is!
The following quote is from Mike Cecil's Australian Military Profile on "Field Artillery 1939-1945":

"The first 112 guns built used the Mark 1 Carriage. Unfortunately, this had a tendency to "bounce" excessively on firing, so a modified carriage, the Mark 2 , was introduced for the second batch of 100 guns.This Carriage was fitted with stabilising segments to the ends of the axle, which reduced the violence of the bounce, but did not eliminate it. The stabilisers could be swung up towards the front when not in use.
The wheels were standard commercial types modified to fit the hubs and fitted with hooks on the rim to enable the use of drag ropes. Tyres were 6.00-16 on the Mk1 Carriage and 7.50-16 on the Mk 2."

Interestingly, the gun at Cowra museum is serial No A118, yet has the Mk1 Carriage.