Probes on Testo Diff. Manometers

I e-mailed them and a person from Testo kindly answered me (and I fully agree with him) :

"This cannot be done and would never be offered, in cases of a damaged 425 they would try to repair it if possible, but replacing the probe with a probe from a 435 would never be an option, mainly as the probes for the 435 are as expensive if not more expensive than the whole 425 instrument."

But what amuses me with Testo is the fact that there are also not-in-the-US-made tools sold 2-3 times cheaper. Thus, theoretically, a China-made probe for 435 meter could be considered, I believe, a priceworth substitude for a broken US-made 425 meter.