You are right.Next time i will try presto ham maker (at 80c)
Also it seems adding Phosphate( STPP) is not dangerous as i think before and i will add it for better texture next time.
the toxicity of polyphosphates is low, as the lowest LD50 after oral administration is >1,000 mg/kg body weight. Similarly, no mutagenic, carcinogenic, or reproductive effects have been noted
en.wikipedia.org/wiki/Sodium_triphosphate