Within thirty days after the filing of the original certificate, the committee shall file the completed petition in the office of the city clerk. The city clerk shall examine the same within the next five days, and if he finds it irregular in any way, or finds that the number of signers is less than twenty five percent of the total number of electors who cast their votes at the last preceding regular municipal election, he shall so notify all of the members of the committee by mail. The committee then shall be given ten days in which to file additional signature papers and to correct the petition in all other respects, but they may not change the statement of the grounds upon which the recall is sought. If at the end of that time the city clerk finds the petition still insufficient or irregular, he shall notify all the members of the committee by mail to that effect and shall file the petition in his office. No further action shall be taken thereon.