sal
i don't have a densitometer, my negatives were weak, they lacked contrast and density. if i put them "on a newspaper"
as described in ansel adam's "the negative" .. the image on the negative was nearly lost to the print. i do not do the zone system,
i process my film by using the published time and temperture as recommended by the manufacturer as a starting point and if additional contrast/density
is required i increase time or exposure. i have processed film like this since 1980-81 with no issues, and my methods were refined even more when i was
processing hundreds of sheets of 5x7 film daily, for a well established portrait photographer ( 50 years established ). using xtol was not something i did willy-nilly
it was recommended to me by a printer i was using after she met the husband and wife team who invented the developer, and she warned me that it would behave as it did.
i bracketed exposures and even used straight developer at times at 2x the suggeted starting point. dip/dunk sheet film with hangers, rotary processors, hand tank/inversion
continuous shuffling sheet film in trays finaly after 2-3 years i gave up ( although i picked up another packet years later and tried again, with equally lackluster results ).
sorry sal, i will never buy that developer again, i really have no need to because i have already found my magic bullet.
best of luck !
john