Testing any transistor in circuit will have its faults. any readings are not to be relied upon - ive also NEVER had anywhere near some sort of reliable results using Clays methods.. i never test this way.

 2N4401 are just a signal transistor - generic replacements are at jaycar in the form of  PN100 or PN200... but...... rule of thumb is that if you have a LOT of one kind of transistor ( in this case 2N4401) and ALL results are the same, then this is normally the reading given for that transistor in that circuit.
In other words - the chance of ALL of them to be blown is very unlikely and in circuit you will get stray readings - only REAL test is out of circuit and with a resistance reading betwen all the gates forwards and reversed ( remember that current will only flow one way through B and C etc and should NEVER flow between C and E)

Pull one out - stop being lazy and test it - if it tests OK out of circuit then it is OK.. the time you spent posting on this forum would have determined this already.

If in circuit it tests bad but ALL the others test the same than you can 90% assume that they are good... but like i say - no real 100% guarantee on a test in circuit