I have one of the pre-Cimarron ,Walt Johnson TTn 's as well and it has been tank tough for 15 years.
I had formally owned a pre- Beretta Stoeger & a Savage Fox Model B. ( no hammers ) for CAS, but I wanted external hammers.
The Russians offered a the Baikal MP220F at the time, and Rossi had a hammer gun ( discontinued years earlier )
The Turkish guns at the time were off and on imported , by several , EMF , ADCO , seemed they'd get a batch then quit and someone else would try them with different name EMF Liberty , Liberty II , ADCO , Charles Daly.
The main issue seems guns were imported, but it was said no parts for repair if needed
Baikal also offered a external cocking lever gun that, sorta looked like hammers ( but not acceptable to me ).
So with those options in 2002-3 .... I ordered a TTn from Walt Johnson. In which he had installed lighter hammer springs ( and sent along the OEM springs as parts
It has served me all these years and to only modification was to dull the sharp little accent spurs on the hammers.
Based on my experience with it, it was the right gun and I'd do it again.