Update

I removed the valve body and solenoids, I checked them for resistance and also for mechanical operation, they all seem to be good.

I still get the hard shift from 1-st to 2-nd.

I am not sure about the 5-th gear, I don't feel it.

The rpm are as follows:

60mph - 2400rpm
70mph - 2800rpm
80mph - 3200rpm

Is it normal or am I driving in the 4-th gear only?

Thanks again

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2008 ML320 CDI
2007 GL320 CDI
2005 Audi A6 (sold)
2001 E320 (sold)
2004 lexus RX330 (sold)
2004 Honda CRV (sold)
93 190E 2.6 (sold)
97 E320 (sold)
2000 Honda CRV (sold)
91 350SD (sold)
90 E300 with amg body kit (sold)
83 300sd aqua marine (sold)
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