As per my emailed response to you, there is not going to be a form to fit every situation. This is why I stated to you that you will need to modify the forms to fit your needs. The process is still the same. The law I cited for you states:
Whenever the court has reason to believe that any personal representative has wasted, embezzled, or mismanaged, or is about to waste, or embezzle the property of the estate committed to his or her charge, or has committed, or is about to commit a fraud upon the estate, or is incompetent to act, or is permanently removed from the state, or has wrongfully neglected the estate, or has neglected to perform any acts as such personal representative, or for any other cause or reason which to the court appears necessary...
NOW, under the law below, any heir, devisee, legatee may file the petition.
Procedure when personal representative recreant to trust or subject to removal.
If any personal representative who has been granted nonintervention powers fails to execute his or her trust faithfully or is subject to removal for any reason specified in RCW 11.28.250 as now or hereafter amended, upon petition of any unpaid creditor of the estate who has filed a claim or any heir, devisee, legatee, or of any person on behalf of any incompetent heir, devisee, or legatee, such petition being supported by affidavit which makes a prima facie showing of cause for removal or restriction of powers, the court shall cite such personal representative to appear before it, and if, upon hearing of the petition it appears that said personal representative has not faithfully discharged said trust or is subject to removal for any reason specified in RCW 11.28.250 as now or hereafter amended, then, in the discretion of the court the powers of the personal representative may be restricted or the personal representative may be removed and a successor appointed. In the event the court shall restrict the powers of the personal representative in any manner, it shall endorse the words "Powers restricted" upon the original order of solvency together with the date of said endorsement, and in all such cases the cost of the citation, hearing, and reasonable attorney's fees may be awarded as the court determines.